GPT-5.3 Codex Spark
As of Oct 4, 2026, the cheapest GPT-5.3 Codex Spark API price is $1.75 per 1M input tokens (OpenAI) and $14 per 1M output tokens (OpenAI). GPT-5.3 Codex Spark is offered by 3 providers in the gpt-codex-spark family, reasoning enabled. One provider lists it as a free-tier offer.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| OpenAI | Cheapest$1.75 | Cheapest$14 | $0.175 | — | 128k |
| OpenCode Zen | $1.75 | $14 | $0.175 | — | 128k |
| Poefree | free | free | — | — | 128k |
GPT-5.3 Codex Spark pricing FAQ
What is the cheapest GPT-5.3 Codex Spark API?
As of Oct 4, 2026, OpenAI has the lowest GPT-5.3 Codex Spark output price at $14 per 1M tokens, and OpenAI has the lowest input price at $1.75 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How much does GPT-5.3 Codex Spark cost on OpenAI?
OpenAI charges $1.75 per 1M input tokens and $14 per 1M output tokens for GPT-5.3 Codex Spark.
How many providers offer GPT-5.3 Codex Spark?
3 providers list GPT-5.3 Codex Spark on Sovyron; 2 of them sell it at a metered per-token price.
Is GPT-5.3 Codex Spark free?
1 provider(s) list a free-tier offer: Poe. Free tiers usually have rate limits.
What is the context window of GPT-5.3 Codex Spark?
GPT-5.3 Codex Spark supports a 128k-token context window and up to 128k output tokens.
Token cost calculator
What a month costs at one provider's published rates. Enter the tokens you expect to send and receive; cached tokens use the cached-input price where the provider lists one, and count as ordinary input where it does not.
Estimated
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